Department of Plant Sciences
University of California
Davis, CA
95616 USA

Tel. 530-754-9925 
Fax: 530-752-4361 
Email:tpyoung@ucdavis.edu

PUBLICATIONS - TRUMAN P. YOUNG (pdfs available for many)

Regular Publications

Palmer, T.M., M.L. Stanton, T.P. Young, J.R. Goheen, R.M Pringle & R. Karban. 2008. Breakdown of an ant-plant mutualism following the loss of large herbivores from an African savanna.  Science 319:192-195 . pdf

Okello, B.D., T.P. Young, C. Riginos, D. Kelly & T. O'Connor. Short-term survival and long-term mortality of Acacia drepanolobium after a controlled burn in Laikipia, Kenya.  African Journal of Ecology, in press.

Infalt, S.B. & T.P. Young.  Forest restoration of campsites at Kings Canyon National Park, California.  Ecological Restoration, in press.

Ingolia, M., T.P. Young & E.G. Sutter. Germination ecology of Rorippa subumbellata (Tahoe yellow cress), an endangered, endemic species of Lake Tahoe.  Seed Science and Technology, in press.

McCauley, D.J., F. Keesing, T.P. Young & K.D. de la Cruz.Effects of the removal of large herbivores on fleas of small mammals. Journal of Vector Ecology, in press.

Veblen, K.E. & T.P. Young.  The alkali specialist Hemizonia pungens spp. pungens does not prefer alkali soils. Journal ofVegetation Science, in press.

Holmes, K.A., K.E. Veblen, T.P. Young, & A.M. Berry. California oaks and fire: a review and case study.  Proceedings of the 6th California Oak Symposium, in press.

Ogada, D., M.E. Gadd, R.S. Ostfeld, T.P. Young & F. Keesing. 2008. Impacts of large herbivores on bird diversity and abundance in an African savanna. Oecologia 156:387-397. pdf

Off, E.C., L.A. Isbell & T.P. Young. Population density and habitat preferences of the Kenya Lesser Galago (Galago senegalensis braccatus) along the Ewaso Nyiro River, Laikipia, Kenya.  Journal East African Natural History 97:109-116. pdf

Okello, B.D., T.P. Young, C. Riginos, D. Kelly & T. O'Connor. 2008. Short-term survival and long-term mortality of Acacia drepanolobium after a controlled burn in Laikipia, Kenya.  African Journal of Ecology, in press. pdf

Isbell, L.A. & T. P. Young. 2007. Interspecific and temporal variation in domatia contents of the ant-plant Acacia drepanolobium, a staple food for patas monkeys (Erythrocebus patas) in Laikipia, Kenya.  American Journal of Primatology 69:1387-1398. pdf

Riginos, C. & T.P. Young. 2007. Positive and negative effects of grasses and wild and domestic herbivores on Acacia saplings. Oecologia 153:985-995. pdf

Odadi, W., T.P. Young, & J. Okeyo-Owuor. 2007. The effects of wild herbivores on cattle diet in Laikipia rangeland, Kenya.  Rangeland Ecology and Management 60:179-185. pdf

Lulow, M.E., T.P. Young, J.L. Wirka, & J.H. Anderson. 2007. Variation in the initial success of seeded native bunchgrasses in the rangeland foothills of Yolo County, California.  Ecological Restoration 25:20-28. pdf

Veblen, K.E., K.A. Holmes, & T.P. Young. 2007. Most one-year-old grass plugs survive controlled burns.  Ecological Restoration 25:50-51. pdf

Pringle, R.M., T.P. Young, D.I. Rubenstein, & D.J. McCauley. 2007. Primary productivity and the strength of herbivore-initiated interaction cascades. PNAS 104:193-197. pdf

Stromberg, M., T.P. Young, J. Wirka & P. Kephart. 2007. California Grassland Restoration.  Pp. 254-280 in: Stromberg, M., J.D. Corbin, and C.M. D’Antonio (eds). Ecology and Management of California Grasslands. University of California Press, Berkeley. pdf

Young, T.P. & D.J. Augustine. 2007. Interspecific variation in the effects of large mammalian herbivores on reproduction in Acacia species in Laikipia, Kenya.  Biotropica 39:559-561. pdf

Dawson, K., T.P. Young & K.E. Veblen. 2007. Alkali ecotypes in an invasive annual grass, Lolium multiflorum.  Biological Invasions 9:327-234. pdf

Goheen, J.R., T.P. Young, F. Keesing & T.M. Palmer. 2007. Consequences of herbivory by native ungulates for reproduction of a savanna tree. Journal of Ecology 95:129-138. pdf

McCauley, D.J., F. Keesing, T.P. Young, J. Peters & B.F. Allan. 2006. Indirect effects of large herbivorous mammals on snakes in an African savanna.  Ecology 87:2657-2663. pdf

Young, T.P. 2006.  Declining rural economies and the future of biodiversity: missing the forest for the trees?  Journal of International Wildlife Law and Policy 9:319-138 . pdf

Deering R.H. & T.P. Young. 2006. Germination speeds of exotic annual and native perennial grasses in California, and the potential benefits of seed priming for grassland restoration.  Grasslands 15:1,14-15. pdf

Young, T.P., D.A. Petersen & J.J. Clary. 2005. The ecology of restoration: historical links, emerging issues, and unexplored realms.   Ecology Letters 8:662-673 . pdf

Warui, C.M., M.H. Villet, T.P. Young & R. Jocqué. 2005. Influence of grazing by large mammals on the spider community of a Kenyan savanna biome. Journal of Arachnology 33:269-279.  pdf

Stanton, M.L, T.M. Palmer & T.P. Young. 2005. Ecological barriers to early colony establishment in three coexisting acacia ant species in Kenya. Insectes Sociaux 52:393-401. pdf

Huddleston, R.T & T.P. Young. 2005. The effects of weed control and soil amendments on exotic species and planted native grasses in an Oregon grassland.   Western North American Naturalist 65:507-515. pdf

Lesica, P. & T.P. Young. 2005.  Demographic model explains life history evolution in Arabis fecunda.   Functional Ecology 19:471-477.  pdf

Kostel-Hughes, F., T.P. Young & J.D. Weir. 2005.   Emergence and seedling growth of native and non-native trees species in response to leaf litter depth.   Journal of the Torrey Botanical Society 132:50-61. pdf

Young, T.P. & R.Y. Evans. 2005. Effects of containers and irrigation regimes on initial seedling survival and growth in Valley Oak (Quercus lobata). Native Plants Journal 6:83-90. pdf

Young, T.P., T.M. Palmer & M.E. Gadd. 2005.   Competition and compensation among cattle, zebras, and elephants in a semi-arid savanna in Laikipia, Kenya.   Biological Conservation 122:351-359. pdf

Warui, C. M., M.H. Villet, & T.P. Young. 2004.   Spiders (Araneae) from black cotton soils of a highland savanna in Laikipia, central Kenya.   Journal of Afrotropical Zoology 1:13-24. pdf

Huntzinger, P.M., R. Karban, T.P. Young & T.M. Palmer. 2004. Relaxation of induced indirect defenses of acacias following removal of mammalian herbivores. Ecology 85:609-614. pdf

Young, T.P. 2004. Fire-induced reproduction of Festuca pilgeri in the subalpine zone of Mount Kenya.   African Journal of Ecology 42:235-236. pdf

Huddleston, R.T & T.P. Young. 2004.   Spacing and competition between planted grass plugs and pre-existing perennial grasses.   Restoration Ecology 12:546-551. pdf

Palmer, T.M., M.L. Stanton, & T.P. Young.   2003.   Competition and coexistence: exploring the mechanisms that restrict and maintain diversity within mutualist guilds. American Naturalist 161:S63-S79. pdf

Young, H.J. & T.P. Young. 2003. Teaching evolutionary change. American Biology Teacher 65:444-448. pdf

Young, T.P., M.L. Stanton & C. Christian. 2003. Effects of natural and simulated herbivory on spine lengths of Acacia drepanolobium in Kenya. Oikos 101:171-179. pdf

Ward, D. & T.P. Young. 2002. Effects of large mammalian herbivores and ant symbionts on condensed tannins of Acacia drepanolobium in Kenya. Journal of Chemical Ecology 28:913-929. pdf

Young, T. P. 2002. The Poppy Paradox and a novel derivation for the demographic conditions favoring the evolution of semelparity. Bulletin of the Ecological Society of America 83:121-123. pdf

Isbell, L.A. & T.P. Young. 2002. Ecological models of female social relationships in primates: similarities, disparities, and some directions for future clarity. Behaviour 139:177-202. pdf

Stanton, M.L, T.M. Palmer , and T.P. Young. 2002. Competition-colonization tradeoffs in a guild of African acacia-ants. Ecological Monographs 72:347-363. pdf

Palmer, T.M., T.P. Young & M.L. Stanton. 2002. Burning bridges: priority effects and the persistence of a competitively subordinate acacia-ant in Laikipia, Kenya. Oecologia 133:372-379. pdf

Okello, B.D., T.G. O’Connor, & T.P. Young. 2001. Growth, biomass estimates, and charcoal production of Acacia drepanolobium in Laikipia, Kenya. Forest Ecology & Management 142:143-153. pdf

Young, T.P., J.M Chase & R.T. Huddleston. 2001. Community succession and assembly-- comparing, contrasting and combining paradigms in the context of ecological restoration. Ecological Restoration 19:5-18. pdf

Hobbs, T. and T.P. Young. 2001. Growing Valley Oak. Ecological Restoration 19:165-171. pdf

Gadd, M.E., T.P. Young & T.M. Palmer. 2001. Effects of simulated shoot and leaf herbivory in Acacia drepanolobium. Oikos 92:515-520. pdf

Young, T.P. & R.Y Evans. 2001. Container stock versus direct seeding for woody species in restoration sites. Comb. Proc. Intl Plant Propagation Soc. (2000) 50: 577-582. pdf

Young, T.P. 2000. Restoration ecology and conservation biology. Biological Conservation 92:73-83. pdf

Palmer, T.M., T.P. Young, M.L. Stanton and E. Wenk. 2000. Short-term dynamics of an acacia ant community. Oecologia 123:245-235. pdf

Ostro, L.E.T., T.P. Young, S.C. Silver, F.W. Koontz. 2000. Habitat selection by translocated howler monkeys in Belize. Animal Conservation 3: 175-181. pdf

Okello, D.N. & T.P. Young. 2000. Effects of fire, bruchid beetles and soil type on the germination and seedling establishment of Acacia drepanolobium. African Journal of Range and Forage Science 17:46-51. pdf

Stanton, M.L. and T.P. Young. 1999. Thorny relationships. Natural History 1999 (11):28-31.

Stanton, M.L., T.M. Palmer, T.P. Young, A. Evans & M.L. Turner. 1999. Sterilization and canopy modification of a swollen thorn acacia tree by a plant-ant. Nature 401:578-581. pdf

Isbell, L.A., J. Pruetz & M. Lewis, T.P. Young. 1999. Rank differences in ecological behavior: a comparative study of patas monkeys (Erythrocebus patas) and vervets (Cercopithecus aethiops). International Journal of Primatology 20:257-272. pdf

Isbell, L.A., J. Pruetz, B.M. Nzuma, and T.P. Young. 1999. Comparing measures of daily travel distance in primates: methodological considerations and socioecological implications. American Journal of Primatology 48:87-98. pdf

Ostro, L., T.P. Young, S.C. Silver, and F.W. Koontz. 1999. A geographic information system (GIS) method for estimating home-range size. Journal of Wildlife Management 63:748-755. pdf

Ostro, L.E.T., S.C. Silver, F.W. Koontz, T.P. Young and R. H. Horwich. 1999. Ranging behavior of translocated and established groups of black howler monkeys Alouatta pigra in Belize, Central America. Biological Conservation 87:181-190. pdf

Kostel-Hughes, F., T.P. Young, and M.M. Carreiro. 1998. Forest leaf litter quantity and seedling occurrence along an urban-rural gradient. Urban Ecosystems 2:263-278. pdf

Kostel-Hughes, F., T.P. Young & M.J. McDonnell. 1998. The soil seed bank and its relationship to the aboveground vegetation in deciduous forests in New York City. Urban Ecosystems 2:43-59. pdf

Young, T.P. & F. Chan. 1998. Establishment of deergrass (Muhlenbergia rigens) at a restoration site, and its prospects for woody plant suppression in transmission rights of way. Grasslands 8(3):3-10.

Young, T.P., B. Okello, D. Kinyua, and T.P. Palmer. 1998. KLEE: a long-term, large scale herbivore exclusion experiment in Laikipia, Kenya. African Journal of Range and Forage Science 14:94-102. pdf

Young, T. P. & B.N. Okello. 1998. Relaxation of an induced defense after exclusion of herbivores: spine length in Acacia drepanolobium. Oecologia 115:508-513. pdf

Isbell L.A., J. Pruetz, & T.P. Young. 1998. Locomotor activities of sympatric vervet and patas monkeys: implications for hominid hindlimb evolution. Am. J. Physical Anthropology 105:199-207. pdf

Isbell, L.A., J. Pruetz and T.P. Young. 1998. Movements of vervet and patas monkeys as estimators of food resource site, density, and distribution. Behavioural Ecology and Sociobiology 42:123-133. pdf

Russo, C. & T.P. Young. 1997. Egg and seed removal at urban and suburban forest edges. Urban Ecosystems 1:171-178. pdf

Young, T.P., C.H. Stubblefield & L.A. Isbell. 1997. Ants on swollen-thorn acacias: species coexistence in a simple system. Oecologia 109:98-107. pdf

Isbell, L.A. & T.P. Young. 1996. The evolution of bipedalism in hominids and reduced group size in chimpanzees: alternative responses to decreasing resource availability. Journal of Human Evolution 30:289-297. pdf

Mangel, M. et al. 1996. Principles for the conservation of wild living resources. Ecological Applications 6:338-362. pdf

McClanahan, T.R. & T.P. Young (eds.) 1996. East African Ecosystems and their Conservation, Oxford University Press, New York. (Including co-authorship of the Introduction and authorship of the Summary)

Young, T.P. 1996. High mountain and afroalpine ecosystems. Pages 401-424 in: T.R. McClanahan & T.P. Young (eds.) East African Ecosystems and their Conservation, Oxford University Press, New York.

Mwasya, J., T.P. Young & D.N. Okebiro. 1995. Plant checklist and vegetation map of Ol Ari Nyiro and the Mukutan Gorge, Laikipia, Kenya. Journal of East African Natural History 83:143-197.

Young, T.P., N. Patridge & A. Macrae. 1995. Long-term glades in acacia bushland and their edge effects in Laikipia, Kenya. Ecological Applications 5: 97-108. pdf

Young, T.P. 1995. Landscape mosaics created by canopy gaps, forest edges and bushland glades. Selbyana 16:127-134.

Young. T.P. & A.P. Smith. 1994. Alpine herbivory on Mount Kenya. 219-235 in: Tropical Alpine Environments: Plant Form and Function. P.W. Rundel, A.P. Smith & F.C. Meinzer, eds. Cambridge University Press, Cambridge.

Smith, A.P. & T.P. Young. 1994. Population biology of Senecio keniodendron (Compositae), an giant African rosette species. Pages 273-293 in: Tropical Alpine Environments: Plant Form and Function. P.W. Rundel, A.P. Smith & F.C. Meinzer, eds. Cambridge University Press, Cambridge.

Young, T.P. 1994. Population Biology of Mount Kenya Lobelias. Pages 251-272 in: Tropical Alpine Environments: Plant Form and Function. P.W. Rundel, A.P. Smith & F.C. Meinzer, eds. Cambridge University Press, Cambridge.

Oloo, T., R. Brett & T.P. Young. 1994. Seasonal variation in feeding ecology of black rhinoceros (Diceros bicornis L.) in Laikipia, Kenya. African Journal of Ecology 32: 142-157.

Young, T.P. & L.A. Isbell. 1994. Minimum group size and other conservation lessons exemplified in a naturally declining primate population. Biological Conservation 68: 129-134. pdf

Young, T.P. 1994. Natural die-offs of large mammals: implications for conservation. Conservation Biology 8: 410-418. pdf

Young, T.P. & V. Perkocha. 1994. Treefalls, crown asymmetry and buttresses. Journal of Ecology 82: 319-324. pdf

Young, T.P. & M.E. Evans. 1993. Alpine vertebrates of Mount Kenya, with particular notes on the rock hyrax. Journal of the East African Natural History Society, 82(202): 54-79.

Isbell, L.A. & T.P. Young. 1993. Social and ecological influences on activity budgets of vervet monkeys, and their implications for group living. Behavioral Ecology and Sociobiology 32: 377-385. pdf

Isbell, L.A. & T.P. Young. 1993. Human presence reduces leopard predation in a free-ranging population of vervet monkeys (Cercopithecus aethiops). Animal Behaviour 45: 1233-1235. pdf

Madden, D. & T.P. Young. 1992. Symbiotic ants as an alternative defense against giraffe herbivory in spinescent Acacia drepanolobium. Oecologia 91: 235-238. pdf

Ginsberg, J.R. & T.P. Young. 1992. Measuring association between individuals and groups in behavioural studies. Animal Behaviour 44: 377-379.

Young, T.P. & M.M. Peacock. 1992. Giant senecios and the alpine vegetation of Mount Kenya. Journal of Ecology 80: 141-148. pdf

Young, H.J. & T.P. Young. 1992. Alternative outcomes of natural and experimental high pollen loads. Ecology 73: 639-647. pdf

Young, T.P. 1991. The flora, fauna, and ecology of Mount Kenya and Kilimanjaro. Pp. 37-49 in: Guide to Mount Kenya and Kilimanjaro (4th ed.), I.A. Allen, ed. Mountain Club of Kenya, Nairobi.

Young, T.P. & C. Francombe. 1991. Growth and yield estimates in natural stands of leleshwa (Tarconanthus camphoratus). Forest Ecology and Management 41: 309-321. pdf

Milewski, A.V., T.P. Young & D. Madden. 1991. Thorns as induced defenses: experimental evidence. Oecologia 86: 70-75. pdf

Young, T.P. & L.A. Isbell. 1991. Sex differences in giraffe feeding ecology: energetic and social constraints. Ethology 87: 79-89. pdf

Young, T.P. & S.P. Hubbell. 1991. Crown asymmetry, treefalls, and the repeat disturbance of broad-leaved forest gaps. Ecology 72: 1464-1471. pdf

Young, T.P. & C.K. Augspurger. 1991. Ecology and evolution of long-lived semelparous plants. Trends in Ecology and Evolution 6: 285-289. pdf

Young, T.P. 1990. Mount Kenya forests: an ecological frontier. Geographica Bernensia, African Studies Series A8: 197-205.

Young, T.P. 1990. The evolution of semelparity in Mount Kenya lobelias. Evolutionary Ecology 4: 157-171. pdf

Young, T.P. & W.K. Lindsay. 1988. Role of even-aged population structure in the disappearance of Acacia xanthophloea woodlands. African Journal of Ecology 26:69-72.

Young, T.P. 1987. Increased thorn length in Acacia drepanolobium- an induced response to browsing. Oecologia 71: 436-438. pdf

Smith, A.P. & T.P. Young. 1987. Tropical alpine plant ecology. Annual Review of Ecology and Systematics 18: 137-158. pdf

Young, T.P. & S.V.O. Robe. 1986. Micro-environmental role of a secreted aqueous solution in afro-alpine Lobelia keniensis. Biotropica 18: 267-269. pdf

Young, T.P. & M.M. Peacock. 1985. Vegetative key to the alpine vascular plants of Mount Kenya. Journal of the East African Natural History Society 185: 1-9.

Young, T.P. 1985. Lobelia telekii herbivory, mortality, and size at reproduction: variation with growth rate. Ecology 66: 1879-1883. pdf

Young, T.P. 1984. Kenya's alpine and high forest ecosystems. Pp 119-137 in: Endangered Resources for Development, V.C. Gilbert, ed. National Environment and Human Settlements Secretariat, Nairobi, Kenya.

Mulkey, S.S., A.P. Smith, & T.P. Young. 1984. Predation by elephants of Senecio keniodendron in the alpine zone of Mount Kenya. Biotropica 16: 246-248. pdf

Young, T.P. 1984. Solar irradiation increases floral development rates in afro-alpine Lobelia telekii. Biotropica 16: 243-245. pdf

Young, T.P. 1984. Comparative demography of semelparous Lobelia telekii and iteroparous Lobelia keniensis on Mount Kenya. Journal of Ecology 72: 637-650. pdf

Young, H.J. & T.P. Young. 1983. Local distribution of C3 and C4 grasses on Mount Kenya. Oecologia 58:3 73-377. pdf

Young, T.P. 1982. Bird visitation, seed set, and germination rates in two Lobelia species on Mount Kenya. Ecology 68: 1983-1986. pdf

Smith, A.P. & T.P. Young. 1982. The cost of reproduction in Senecio keniodendron, a giant rosette plant of Mount Kenya. Oecologia 55: 243-247. pdf

Young, T.P. 1981. A general model of comparative fecundity for semelparous and iteroparous life histories. American Naturalist 118: 27-36. pdf

Notes, reviews, etc.

Young, T.P. and J.R. Goheen. 2006.  Whistling thorn recruitment is affected in unexpected ways by large mammals. (“KLEE Corner” #6). Laikipia Wildlife Forum Newsletter.  January Issue, page 10.

Young, T.P.  2005.  Assembly Rules and Restoration Ecology, by V.K. Temperton et al.   Journal of Environmental Management 32:98-99 (book review).

Young, T.P. 2005. The pathology of no herbivory: long-term effects of herbivore exclusion in an African savanna. ("KLEE Corner" #5) . Laikipia Wildlife Forum Newsletter.   March/April Issue.

Young, T.P.  2005. Assembly Rules and Restoration Ecology, by K. Temperton et al. Environmental Conservation 32:98-99 (book review). pdf

Young, T.P. 2004. Do elephants lessen competition between cattle and zebras? ("KLEE Corner" #4) . Laikipia Wildlife Forum Newsletter.   November Issue.

Young, T.P. 2004. Plants fight back. ("KLEE Corner" #3) . Laikipia Wildlife Forum Newsletter.   May Issue.

(Young. T.P. & D. Johnson.) 2003/4. Restoration.   Noxious Times 5(4):10.

Young, T.P. 2003.   KLEE: the Kenya Long-term Exclosure Experiment ("KLEE Corner" #1). Laikipia Wildlife Forum Newsletter.    March/April Issue.

Young, T.P., S. Talbot & W. Wamiti. 2003. Checklist of the birds of Mpala/Segera. 8 pp.

Young, T.P. 2003. KLEE: the Kenya Long-term Exclosure Experiment. Laikipia Wildlife Forum Newsletter (“KLEE Corner”). March/April Issue.

Young, T.P., D.L. Immel and J.J. Clary. 2003. Historical Ecology, by Egan & Howell. Journal of Environmental Management 68:437-8 (book review). pdf

Smith, S. and T.P. Young. 2002. EH faculty host conference on restoration issues at UCD. Growing Points 6(2):8. pdf

Young, T.P. 2001. What is a native? Noxious Times (California Interagency Noxious Weed Coordinating Committee) 3(4):11. [Reprinted in Growing Points] pdf

Young, T.P. & D.B. Leroy. 2000. Restoration in Education: at UC-Davis, the emphasis is on growing a Restoration Ecology program for the future. Society for Ecological Restoration News 13(1):8.

Young, T.P. 2000. Matching wits with the hyrax. Muse Magazine September, 28-34. (adapted from Young 1996).

Young, T.P. 1999. Catastrophes are still interesting. Conservation Biology 13: 202 (correspondence). pdf

Young, T.P. 1999. Restoration ecology takes root at UC Davis. Growing Points 3(1):4. pdf

Wester, A. & T.P. Young. 1997. Spatial pattern of deer herbivory at suburban forest edges. Restoration & Management Notes 15:186-187.

Young, T.P. & A.H. Harcourt. 1997. Viva Caughley! Conservation Biology 11:831-832 (correspondence). pdf

Young. T.P. (with F. Chan). 1997. Restoration ecology: renewing our disturbed landscapes. Growing Points 6(5):1-2. pdf

Young, T.P. 1996. Little criminals. Pp. 117-126 in: I’ve been gone far too long. M. Borgerhof Mulder, ed. RDR Press, Berkeley. (Reprinted in Natural History, June 1996:28-31.)

Young, T.P. 1995. Wildlife management links up with conservation biology. Conservation Biology 9: 969-971 (book review).

Young, T.P. & F. Kostel-Hughes. 1995. NIH Image: free software for image analysis. Bulletin of the Ecological Society of America 76: 39-40 (technical note).

Young, T.P. 1995. 'The evolution of group size and the evolution of group living' and 'Predation risk, predation rate, and the effectiveness of anti-predator traits'. Boxes in: Isbell, L.A. Predation on primates: ecological patterns and evolutionary consequences. Evolutionary Anthropology 3: 62-71.

Young, T.P. 1995. A protist writes. TREE 10:289. (correspondence) pdf

Young, T.P. 1994. Biodiversity questions. Science 265: 1511 (correspondence). pdf

Young. T.P. 1994. Essentials of Conservation Biology , by Richard Primack. Quarterly Review of Biology 69: 118-119 (book review).

Young, T.P. 1993. Development and conservation: more on Caring. Conservation Biology 7: 750-751 (correspondence). pdf

Young, T.P. 1992. Intuition and the logistic equation. TREE 7:315-6. (correspondence) pdf

Young, T.P. 1991. Diversity overrated. Nature 352(6330): 10 (correspondence). pdf

Young, T.P. 1989. Report on Mpala Farm to the Smithsonian Institution, 25 pp.

Young, T.P. 1984. Kenya's indigenous forests: status, threats, and prospects for conservation action. World Wildlife Fund/IUCN Report. 41 pp.

Fayad, C, C. Shorter & T. P. Young 1980. Wildlife in the high moorlands. Swara 7: 12.

Young, T.P. 1980. Plant life on Africa's highest peaks. Swara 7: 8-10.

Young, T.P. 1973. San Juan Mountains, Colorado. Accidents in North American Mountaineering, 1972. American Alpine Club